Sound-refining box



Patented Aug. 14, 1923,

UNITED STATES.

PATENT OFFIC.

WILLIAM V. OGREN, F COLUMBUS, NEBRASKA, ASSIGNOR OF ONE-HALF TO CHARLEY -ID. FRENCH, OF COLUMBUS, NEBRASKA.

" SOUND-REFINING BOX.

Application filed July 14,

To all whom it may concern:

Be it known that 'WILLIAM V. OGREN, a citizen'of the United States of America, residing at Columbus, in the county of Platte and State of Nebraska, has invented new anduseful Improvements in Sound-Refining Boxes, of which the following is a specification. i I p The object of the invention is to provide a sound box or resonator for graphophones, phonographs and like instrumentswhereby the sound as received from the record through the sound arm while being amplified will be refined to eliminate'harshness and mechanical noises to the end that a relative purity of reproduction may be secured; and with this object in view the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the accompanying drawings,

wherein Figure 1 is a vertical sectional view of a portion of a reproducing instrument having a sound box constructed in accordance with the invention.

Figure 2 is a horizontal section of the same on the plane indicated by the line 2-2 of Figure 1. r

The apparatus consists of a casing 10 which in the construction illustrated is of rectangular form in plan with a platform 11 disposed horizontally therein near the top for the support'of the rotary record table 12 in connection with which is employed a conventional form of sound arm 13 carrying the sound box 14: and needle 15.

The sound arm extends through a suitable opening in the platform ll and is in communication with a sound receiving box '16 enclosed within the casing below the plane of the platform, and this sound receiving box in turn is in communication with a transmitting funnel 17 enlarged toward its outlet end at the side wall of the casing and located between upper and lower partitions 18 and 19 which as shown may be provided with cut away'portions forming openings 18 and 19 The sound receiving box serves as a re- 1922. Serial n0. stasis.

fining chamber which has the effect of subduing the abrupt, sharp, and relatively discontinuous or disjointed sounds due to mechanical scratching or vibrations of the mechanism while permitting the freeoutlet through the funnel of the continuous or musical sounds, and as a further means of softening the reproduction supplemental outlet openings 20 may be provided in the sound arm below the elbow thereof and preferably below the plane of the platform 11 as indicated.

Having described the invention, what is claimed as new and useful is l. A cabinet talking machine including a compartment, a sound receiving tone chamber enclosed within and occupying a portion of the horizontal area at the rear of said compartment and spaced intermediate the upper and lower walls of the compartment, spaced parallel vibrating walls connecting the front wall of the sound receiving tone chamber and the front wall of the compartment and provided with openings substantially smaller than the horizontal area of the compartment, and an amplifier connected to the front wall of the tone chamber and communicating with the interior thereof and with an opening in the remote front wall of the compartment.

2. A cabinet talking machine including a compartment, a sound receiving tone chamber enclosed within and occupying a portion of the horizontal area at the rear of said compartment and spaced intermediate the upper and lower walls of the compartment, spaced parallel vibrating walls being continuations of the upper and lower walls of said tone chamber and connecting with the front wall of the compartment, said walls having openings smaller than the horizontal area of the compartment, and an amplifier in communication with the interior of the tone chamber and connecting the front wall of the tone chamber with an opening in the remote front wall of the compartment.

In testimony whereof he affixes his signature.

WILLIAM V. OGREN. 

